Has anyone tried this? If this really works I'll be making a trip to walmart soon. lol
That video is a hoax. 6 volt lantern
batteries usually contain 4 D, or 4 F sized cells (same diameter as a D, but longer). Their mah capacities range from 10,000 (cheapie carbon-zinc) up to 26,000 for alkaline. They also make double wide lantern batteries that have up to 52,000 mah.
I'd guess, though, that because of the relatively high internal resistance of these kind of cells, when used for a PV, the usable amount of capacity would be much less. I'd figure on a carbon-zinc lantern battery giving power for about 3 to 5 days of moderate to heavy
vaping, twice that for alkaline.
On the other hand, a mod using 3 or 4 D sized NIMH cells (much better for high current use, like powering a PV), would last a good week's moderate to heavy
vaping, before needing to be charged again. And with their huge capacity, they would delivery very steady current, even for long drags.
I've been considering building such a beast.